PHILADELPHIA, PA - JULY 28: Khizr Khan, father of deceased U.S. Army Capt. Humayun S. M. Khan, delivers remarks as he is joined by his wife Ghazala Khan on the fourth day of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Joe Raedle/Getty Images)

PHILADELPHIA, PA - JULY 28: Delegates from Arkansas, some dressed in costumes, sit at the Democratic National Convention in Philadelphia on July 28, 2016. (Photo by Michael Robinson Chavez/The Washington Post via Getty Images)

PHILADELPHIA, PA - JULY 28: Hillary Clinton celebrates on stage after accepting the Presidential nomination at the Democratic National Convention in Philadelphia on July 28, 2016. (Photo by Michael Robinson Chavez/The Washington Post via Getty Images)

PHILADELPHIA, PA - JULY 28: A delegate films the singing of the U.S. National Anthem on the fourth and final night of the Democratic National Convention at the Wells Fargo Center on July 28, 2016 in Philadelphia, Pennsylvania. (Photo by Paul Morigi/WireImage)

PHILADELPHIA, PA - JULY 28: (EDITORS NOTE: This image was converted using digital filters) A Spectator shows her fingernails painted with Hillary Clintons likeness the 2016 Democratic National Convention at Wells Fargo Center on July 25, 2016 in Philadelphia, Pennsylvania. (Photo by Mike Coppola/WireImage)

PHILADELPHIA, PA - JULY 28: Chelsea Clinton delivers remarks on the fourth day of the Democratic National Convention at the Wells Fargo Center on July 28, 2016 in Philadelphia, Pennsylvania. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Paul Morigi/WireImage)

PHILADELPHIA, PA - JULY 28: Virginia Gov. Terry McAuliffe on the convention floor on the fourth day of the Democratic National Convention at the Wells Fargo Center on July 28, 2016 in Philadelphia, Pennsylvania. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Paul Morigi/WireImage)

PHILADELPHIA, PA - JULY 28:
Virginia delegate Morgan Jameson sports patriotic fashion during the final day of the Democratic National Convention in Philadelphia on Thursday, July 28, 2016. (Photo by Michael Robinson Chavez/The Washington Post via Getty Images)

PHILADELPHIA, PA - JULY 28:
Virginia delegate Morgan Jameson sports patriotic fashion during the final day of the Democratic National Convention in Philadelphia on Thursday, July 28, 2016. (Photo by Michael Robinson Chavez/The Washington Post via Getty Images)

PHILADELPHIA, PA - JULY 28:
Connecticut delegate Audrey Blondin wears anti Donald Trump buttons as part of her costume, during the final day of the Democratic National Convention in Philadelphia on Thursday, July 28, 2016. (Photo by Jabin Botsford/The Washington Post via Getty Images)

PHILADELPHIA, PA - JULY 28:
Matthew Larding (left) and Thelma Sias, members of the Wisconsin delegation, observe the invocation during the final day of the Democratic National Convention in Philadelphia on Thursday, July 28, 2016. (Photo by Melina Mara/The Washington Post via Getty Images)

PHILADELPHIA, PA - JULY 26: An delegate hold up a sign in support of Democratic presidential candidate Hillary Clinton on the second day of the Democratic National Convention at the Wells Fargo Center, July 26, 2016 in Philadelphia, Pennsylvania. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Joe Raedle/Getty Images)

PHILADELPHIA, PA - JULY 27: An attendee holds a phone with a Hillary Clinton themed case on the third day of the Democratic National Convention at the Wells Fargo Center, July 27, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Chip Somodevilla/Getty Images)

PHILADELPHIA, PA - JULY 27: An attendee wears a cape in support of Democratic presidential candidate Hillary Clinton during the third day of the Democratic National Convention at the Wells Fargo Center, July 27, 2016 in Philadelphia, Pennsylvania. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Drew Angerer/Getty Images)